Improvement in car-wheels



PUTNAM.

Car Wheel.

Patented June 28, 1864 N. PErERs. FNOTO-LITHOGRAPH ASHIN N D O UNITED STATES PATENT OFFICE.

PERLEY PUTNAM, OF LACONIA, NEW HAMPSHIRE.

Specification forming part of Letters Patent No. 43,337, dated June 28, 1864.

To all whom, it may concern:

Be it known that I, PERLEY PUTNAM, of Laconia, in the county of Belknap and State of New l:lampshire,'have invented a new and Improved Oast'Iron Oar-Wheel; and I do hereby declare that the following is a full, clear, and exact description thereof, which will enable any person skilled in the art to make and use the same, reference being had to the accompanying drawings, making a part of this specification, in which- Figure 1 is a view of one side of a car-wheel cast according to my invention Fig. 2, a section of the same, taken in the line 00 m, Fig. 1.

Similar letters of reference indicate the same parts.

extends all around a, and forms what may be termed a double plate or two sides, 0 c, as shown clearly in Fig. 2. These two sides cc merge into one plate or part at the outer side of the opening b, which has-a slightly serpentine shape, as shown at (l, and said part 01 has a flange, e, and a thread, f, at its outer part, as shown in Fig. 2. The two sides 0- 0 project outward in convex form, and have alternate projections-and depressions g g, as indicated by the shading in Fig. 1, forming a cor- ]rugated surface at each side of the wheel around its opening b. These corrugated plates or sides 0 0 give great strength to the wheel without augmenting its weight.

0n the flange side of the serpentine part at of the wheel there are cast V-shaped arms or projectionsh. (Shown clear] yin Fig. 1.) These arms extend from the outer parts of the corrugated plates or sides 0 0 of the wheel to the edge of the same, and along underneath the flange e, the arms diverging from their inner to their outer ends, as shown in Fig. 1.

The arms or projections h strengthen the serpentine part (I of the wheel, and support the flange e, and these arms, in connection with the corrugated plates or sides 0 c and serpentine portion d, constitute a wheel of great strength and durability.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. A castiron car-wheel having a double plate or two plates with corrugated surfaces or alternate projections and depressions extending around the central opening of the wheel, substantialy as shown and described.

2. The V-shaped arms or projections on the serpentine portion of the wheel, and extending along underneath the flange thereof, as set forth.

3. The corrugated double plates 0 c, serpentine portion d, and arms h, all combined and arranged to form a new and improved castiron car-wheel, as described.

PERLEY PUTNAM.

Witnesses:

A. 0. Dow, WM. L. RoWELL. 

